login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A325668 First term of n-th difference sequence of (floor(k*r)), r = sqrt(5), k >= 0. 3
2, 0, 0, 0, 1, -5, 15, -35, 71, -135, 255, -495, 991, -2015, 4095, -8255, 16511, -32895, 65535, -130815, 261630, -523753, 1048322, -2096151, 4183700, -8324849, 16480854, -32363019, 62784774, -119759849, 223346544, -404491999, 705032194, -1166803109 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..200

MATHEMATICA

Table[First[Differences[Table[Floor[Sqrt[5]*n], {n, 0, 50}], n]], {n, 1, 50}]

CROSSREFS

Cf. A325664, A325669.

Inverse binomial transform of A022839.

Sequence in context: A226369 A320751 A263764 * A070202 A280129 A227344

Adjacent sequences:  A325665 A325666 A325667 * A325669 A325670 A325671

KEYWORD

easy,sign

AUTHOR

Clark Kimberling, May 13 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 10 00:32 EDT 2022. Contains 356026 sequences. (Running on oeis4.)